Photovoltaic module

Abstract

The utility model discloses a photovoltaic assembly, which comprises a plurality of photovoltaic units, each photovoltaic unit comprises a first substrate, a photovoltaic cell and a second substrate which are sequentially laminated, each photovoltaic unit further comprises an electric connecting piece which is electrically connected with the photovoltaic cell, the plurality of photovoltaic units are mutually spliced, one of the two spliced photovoltaic units is provided with a first splicing part, the other one of the two spliced photovoltaic units is provided with a second splicing part, the first splicing part is an area where the first substrate exceeds the corresponding second substrate, and the second splicing part is an area where the second substrate exceeds the corresponding first substrate; the first splicing part and the second splicing part are stacked in the thickness direction so as to form an accommodating space between the first splicing part and the second splicing part, and at least parts of the electric connecting pieces of the two spliced photovoltaic units are located in the accommodating space and are electrically connected with each other. According to the photovoltaic assembly provided by the embodiment of the utility model, different requirements of users can be met while the cost is reduced, and electric connecting pieces can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic modules, and more specifically, to a photovoltaic module. Background Art

[0002] With the increasing maturity of solar energy utilization and the technology of combining with buildings, the usage scenarios of solar cell modules are becoming more and more diversified. In particular, a large number of large public places begin to use photovoltaic units as curtain wall materials for construction. In related technologies, the front plate glass and the back plate glass of each photovoltaic unit are aligned in the stacking direction. When splicing and installing multiple photovoltaic units, a bridge needs to be installed between adjacent photovoltaic units, and the lead-out wire harness is long and not easy to hide, affecting the overall aesthetics. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a photovoltaic module, which is easy to produce, the production costs of photovoltaic modules with different specifications are relatively low, facilitating popularization and use, the adjacent photovoltaic units do not require too long lead-out wire harnesses, and the aesthetics is relatively strong.

[0004] Another object of the utility model is to provide a photovoltaic unit.

[0005] The photovoltaic module according to the embodiment of the utility model includes: a plurality of photovoltaic units, each photovoltaic unit includes a first substrate, a photovoltaic cell and a second substrate which are arranged in a stacked manner in sequence, the photovoltaic unit further includes an electrical connector electrically connected to the photovoltaic cell, and a plurality of the photovoltaic units are spliced with each other. Among them, one of the two spliced photovoltaic units has a first splicing part and the other has a second splicing part. The first splicing part is the area where the first substrate exceeds the corresponding second substrate, and the second splicing part is the area where the second substrate exceeds the corresponding first substrate. The first splicing part and the second splicing part are arranged in a stacked manner in the thickness direction to form an accommodation space between the first splicing part and the second splicing part. At least part of the electrical connectors of the two spliced photovoltaic units is located in the accommodation space and are electrically connected to each other.

[0006] The photovoltaic module according to the embodiment of the utility model is formed by splicing a plurality of photovoltaic units, which is beneficial to meeting different needs of users while reducing costs, has a wide range of applications, and the accommodation space formed by the two spliced photovoltaic units can be used to install electrical connectors, which is beneficial to saving electrical connectors, further reducing the cost of the photovoltaic module, and facilitating the simplification of the structure of the photovoltaic module.

[0007] In addition, the photovoltaic module according to the above embodiment of the utility model may further have the following additional technical features:

[0008] According to some embodiments of the present utility model, the photovoltaic unit includes a first photovoltaic unit. The first splicing portion or the second splicing portion is provided on one side of the first photovoltaic unit along the first direction, and on the other side of the first photovoltaic unit along the first direction and on both sides along the second direction, the edges of the first substrate and the second substrate are aligned. The first direction, the second direction, and the stacking direction are perpendicular to each other in pairs; and / or, the photovoltaic unit includes a second photovoltaic unit. The first splicing portion and the second splicing portion are respectively provided on both sides of the second photovoltaic unit along the first direction, and on both sides of the second photovoltaic unit along the second direction, the edges of the first substrate and the second substrate are aligned. The first direction, the second direction, and the stacking direction are perpendicular to each other in pairs; and / or, the photovoltaic unit includes a third photovoltaic unit. The first splicing portion or the second splicing portion is provided on one side of the third photovoltaic unit along the first direction and on one side along the second direction, and on the other side of the third photovoltaic unit along the first direction and on the other side along the second direction, the edges of the first substrate and the second substrate are aligned. The first direction, the second direction, and the stacking direction are perpendicular to each other in pairs; and / or, the photovoltaic unit includes a fourth photovoltaic unit. The first splicing portion and the second splicing portion are respectively provided on both sides of the fourth photovoltaic unit along the first direction, and on one side of the fourth photovoltaic unit along the second direction, the first splicing portion or the second splicing portion is provided. On the other side of the fourth photovoltaic unit along the second direction, the edges of the first substrate and the second substrate are aligned. The first direction, the second direction, and the stacking direction are perpendicular to each other in pairs; and / or, the photovoltaic unit includes a fifth photovoltaic unit. The first splicing portion and the second splicing portion are respectively provided on both sides of the fifth photovoltaic unit along the first direction, and the first splicing portion and the second splicing portion are respectively provided on both sides of the fifth photovoltaic unit along the second direction. The first direction, the second direction, and the stacking direction are perpendicular to each other in pairs.

[0009] According to some embodiments of the present utility model, a plurality of the photovoltaic units are spliced along the first direction. In the first direction, the photovoltaic units located at both ends are the first photovoltaic units, and the photovoltaic units located in the middle are the second photovoltaic units; or, a plurality of the photovoltaic units are spliced along the first direction and the second direction. The photovoltaic units located at the four corners are the third photovoltaic units, the photovoltaic units located between the adjacent corners are the fourth photovoltaic units, and the photovoltaic unit located in the middle is the fifth photovoltaic unit.

[0010] According to some embodiments of the present utility model, the photovoltaic module includes a junction box, and the junction box is connected to the electrical connectors located at the ends in the splicing direction of the photovoltaic module.

[0011] According to some embodiments of the present utility model, a first sealing layer is provided between the first substrate and the second substrate, and the first sealing layer is located between the accommodation space and the photovoltaic cell in the splicing direction, and the electrical connection member penetrates through the first sealing layer.

[0012] According to some embodiments of the present utility model, the accommodation space is filled with a second sealing layer.

[0013] According to some embodiments of the present utility model, the side surface of the first splicing portion and / or the second splicing portion facing the accommodation space is provided with a hollow structure and / or a concave-convex structure.

[0014] According to some embodiments of the present utility model, the size of the accommodation space in the splicing direction of adjacent photovoltaic units is 5 mm - 100 mm.

[0015] According to some embodiments of the present utility model, a color film layer is provided between the first substrate and the photovoltaic cell.

[0016] A photovoltaic unit according to an embodiment of the present utility model includes: a first substrate, a second substrate, a photovoltaic cell, and an electrical connection member. The first substrate, the photovoltaic cell, and the second substrate are sequentially stacked, and at least one side of the photovoltaic unit perpendicular to the stacking direction has a splicing portion, the splicing portion is a staggered portion of the first substrate and the second substrate, and the electrical connection member is electrically connected to the photovoltaic cell.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present utility model, wherein the photovoltaic unit of the photovoltaic module is a second photovoltaic unit;

[0020] Figure 2 is Figure 1 a top view of;

[0021] Figure 3 is a schematic structural diagram of a first photovoltaic unit according to an embodiment of the present utility model;

[0022] Figure 4 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present utility model, wherein a plurality of photovoltaic modules are spliced along a first direction;

[0023] Figure 5 It is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention, in which a plurality of photovoltaic modules are spliced along a first direction and a second direction.

[0024] Reference numerals:

[0025] Photovoltaic module 200;

[0026] Photovoltaic unit 100; First photovoltaic unit 110; Second photovoltaic unit 120; Third photovoltaic unit 130; Fourth photovoltaic unit 140; Fifth photovoltaic unit 150;

[0027] First substrate 10; First splicing portion 11; Photovoltaic cell 20; Second substrate 30; Second splicing portion 31;

[0028] Electrical connector 40; Accommodating space 50; Junction box 60;

[0029] First sealing layer 71; Second sealing layer 72; Glue film 73; Splicing portion 80. Detailed implementation manners

[0030] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0032] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. The meaning of "a plurality" is two or more. The first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. The first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0033] The following describes a photovoltaic module 200 according to an embodiment of the first aspect of the present utility model with reference to the drawings.

[0034] Referring to Figures 1 - 5 As shown, the photovoltaic module 200 according to an embodiment of the present utility model may include a plurality of photovoltaic units 100.

[0035] Specifically, the photovoltaic unit 100 includes a first substrate 10, a photovoltaic cell 20 and a second substrate 30 which are stacked in sequence. The photovoltaic unit 100 further includes an electrical connector 40 electrically connected to the photovoltaic cell 20, and a plurality of photovoltaic units 100 are spliced together. Among them, one of the two spliced photovoltaic units 100 has a first splicing portion 11 and the other has a second splicing portion 31. The first splicing portion 11 is an area where the first substrate 10 extends beyond the corresponding second substrate 30, and the second splicing portion 31 is an area where the second substrate 30 extends beyond the corresponding first substrate 10. The first splicing portion 11 and the second splicing portion 31 are stacked in the thickness direction to form an accommodation space 50 therebetween, and at least a part of the electrical connectors 40 of the two spliced photovoltaic units 100 is located in the accommodation space 50 and is electrically connected to each other.

[0036] The photovoltaic module 200 can be used for power generation. The first substrate 10 may be glass, and the second substrate 30 may be glass. The first substrate 10 and the second substrate 30 are used to protect the photovoltaic cell 20 and reduce the harmful effects of external environments such as moisture, dust and other impurities on the photovoltaic cell 20. For example, in some embodiments, as Figures 1 - 2 shown, the first substrate 10 and the second substrate 30 are stacked in the front-rear direction to protect the photovoltaic cell 20 inside.

[0037] The photovoltaic cell 20 may be a thin film cell or a crystalline silicon cell. The substrates (the first substrate 10 and the second substrate 30) and the photovoltaic cell 20 may be connected by an adhesive film 73 or other means. Generally, the adhesive film 73 covers the photovoltaic cell 20, and the first substrate 10 is bonded to the second substrate 30 through the adhesive film 73. The adhesive film 73 may be EVA (ethylene-vinyl acetate copolymer), POE (polyolefin elastomer), PVB (polyvinyl butyral film), etc.

[0038] For example, in some embodiments, such as Figures 2 - 3 shown, the photovoltaic cell 20 is a thin-film cell and is attached to the second substrate 30. The first substrate 10 and the photovoltaic cell 20 are connected by an adhesive film 73. It should be noted here that Figures 2 - 3 the thicknesses of the different components shown in are only for easy understanding and do not limit the relative thicknesses of the components. For example, the thickness of the thin-film photovoltaic cell 20 in the figure is increased to make the structural arrangement of the photovoltaic cell 20, the second substrate 30, and the adhesive film 73 clear.

[0039] A plurality of photovoltaic units 100 are spliced together and the splicing direction is not limited. For example, in some embodiments, such as Figure 1 shown, two photovoltaic units 100 are spliced in the left-right direction.

[0040] The first splicing portion 11 is the area where the first substrate 10 exceeds the corresponding second substrate 30. Here, the second substrate 30 refers to the second substrate 30 in the same photovoltaic unit 100 as the above-mentioned first substrate 10. The second splicing portion 31 is the area where the second substrate 30 exceeds the corresponding first substrate 10. Here, the first substrate 10 refers to the first substrate 10 in the same photovoltaic unit 100 as the above-mentioned second substrate 30.

[0041] The first splicing portion 11 and the second splicing portion 31 are arranged in a stacked manner in the thickness direction. The thickness direction refers to the thickness direction of the photovoltaic unit 100, that is, the stacking direction of the first substrate 10, the photovoltaic cell 20, and the second substrate 30, for example, the front-rear direction as Figures 2 - 3 shown.

[0042] The material of the electrical connector 40 is not limited. For example, the electrical connector 40 can be a bus bar including a conductive metal, as long as it can be electrically connected to the photovoltaic module 200. The connection method of the electrical connectors 40 of two spliced photovoltaic units 100 can be welding, gluing, etc. For example, spot welding is performed on the two electrical connectors 40, or for example, the two electrical connectors 40 are bonded together using a conductive tape.

[0043] In some related technologies, different curtain walls require different specifications of photovoltaic units, and it is necessary to customize the production of the specifications of photovoltaic units according to the requirements of different curtain walls. The production cost of different specifications of photovoltaic units is high, which is not conducive to popularization and use.

[0044] The photovoltaic module 200 in the present application can be formed by splicing a plurality of photovoltaic units 100. By adjusting the splicing quantity and splicing direction of the plurality of photovoltaic units 100, photovoltaic modules 200 of different specifications can be obtained, which is conducive to meeting the requirements of different curtain walls by producing a few or even only one specification of photovoltaic units 100, reducing the specifications of the required photovoltaic units 100, and splicing different specifications of photovoltaic modules 200 with a few or even only one specification of photovoltaic units 100, which is conducive to meeting user needs, reducing the production difficulty of the photovoltaic module 200, and the production cost of different specifications of photovoltaic modules 200 is relatively low, which is conducive to popularization and use.

[0045] In addition, the electrical connection part of the electrical connector 40 splicing two photovoltaic units 100 is located in the accommodation space 50 to realize the connection of the electrical connectors 40 of the two spliced photovoltaic units 100 in the accommodation space 50, which is conducive to hiding the electrical connectors 40 of the two spliced photovoltaic units 100 in the accommodation space 50, so that there is no need to lead out the wire harness too long between adjacent photovoltaic units 100, improving the aesthetics of the photovoltaic module 200 to meet user needs. And it is not necessary for the electrical connector 40 of each photovoltaic unit 100 to extend outside the accommodation space 50 for storage, reducing the extension size of the electrical connector 40, which is conducive to saving the electrical connector 40, with good economy, and there is no need to set other structures such as cable trays to store the electrical connectors 40 of the two spliced photovoltaic units 100, which is conducive to simplifying the structure of the photovoltaic module 200.

[0046] For example, in some embodiments, such as Figure 2 shown, one end of the electrical connector 40 is connected to the photovoltaic cell 20 and the other end is located in the accommodation space 50, omitting the part of the electrical connector 40 extending out of the accommodation space 50.

[0047] According to the photovoltaic module 200 of the embodiment of the present utility model, the photovoltaic module 200 is formed by splicing a plurality of photovoltaic units 100, which is conducive to meeting different user needs while reducing costs, has a wide application range, and the accommodation space 50 formed by splicing two photovoltaic units 100 can be used to install the electrical connector 40, which is conducive to saving the electrical connector 40, further reducing the cost of the photovoltaic module 200, and is conducive to simplifying the structure of the photovoltaic module 200.

[0048] The design of the photovoltaic unit 100 is relatively flexible. For example, in some embodiments of the present utility model, such as Figures 3 - 4 shown, the photovoltaic unit 100 includes a first photovoltaic unit 110. A first splicing portion 11 or a second splicing portion 31 is provided on one side of the first photovoltaic unit 110 along the first direction, and on the other side of the first photovoltaic unit 110 along the first direction and on both sides along the second direction, the edges of the first substrate 10 and the second substrate 30 are aligned. The first direction, the second direction and the stacking direction are perpendicular to each other in pairs.

[0049] One side of the first photovoltaic unit 110 along the first direction can be used for splicing with other photovoltaic units 100 to obtain photovoltaic modules 200 of different specifications. The other side of the first photovoltaic unit 110 along the first direction and both sides along the second direction can be used to realize the installation of the photovoltaic module 200. By aligning the edges of the first substrate 10 and the second substrate 30, the flatness of the first photovoltaic unit 110 on the side where the substrate edges are aligned can be improved, facilitating the installation of the photovoltaic module 200 through the side where the substrate edges of the first photovoltaic unit 110 are aligned. For example, the side where the substrate edges of the first photovoltaic unit 110 are aligned is closely attached to the installation component, reducing the installation difficulty of the photovoltaic module 200. For example, in some embodiments, the edges of the first substrate 10 and the second substrate 30 are aligned on the left side of the first photovoltaic unit 110, and the upper edge, lower edge, front edge, rear edge, and left edge on the left side of the first photovoltaic unit 110 are all attached within the alloy frame.

[0050] Moreover, the alignment of the edges of the first substrate 10 and the second substrate 30 can make the thickness of the first photovoltaic unit 110 on the side where the substrate edges are aligned relatively thick, which is beneficial to reducing the possibility of fragmentation of the first photovoltaic unit 110 on the side where the substrate edges are aligned and improving the strength of the photovoltaic module 200 at the installation position.

[0051] The stacking direction is the thickness direction of the photovoltaic unit 100, the first direction is a direction perpendicular to the thickness direction, and the second direction is a direction perpendicular to the stacking direction and perpendicular to the thickness direction. For example, in some embodiments, as Figure 1 and Figure 3 shown, the stacking direction is the front-back direction, the first direction is the left-right direction, and the second direction is the up-down direction.

[0052] In some specific embodiments, as Figure 3 shown, a first splicing portion 11 is provided on the right side of the first photovoltaic unit 110, and on the left side, upper side, and lower side of the first photovoltaic unit 110, the edges of the first substrate 10 and the second substrate 30 are aligned.

[0053] Of course, based on the above description, the design of the photovoltaic unit 100 in other embodiments of the present invention is understandable to those skilled in the art.

[0054] In some embodiments of the present utility model, as Figures 1 - 2 and Figure 4 shown, the photovoltaic unit 100 includes a second photovoltaic unit 120. First splicing portions 11 and second splicing portions 31 are respectively provided on both sides of the second photovoltaic unit 120 along the first direction, and on both sides of the second photovoltaic unit 120 along the second direction, the edges of the first substrate 10 and the second substrate 30 are aligned, and the first direction, the second direction, and the stacking direction are perpendicular to each other in pairs.

[0055] Both sides of the second photovoltaic unit 120 along the first direction can be used to splice with other photovoltaic units 100 to obtain photovoltaic modules 200 of different specifications, which helps to overcome the limitation of the specifications of the photovoltaic unit 100 on the photovoltaic module 200. Both sides of the second photovoltaic unit 120 along the second direction can be used to install the photovoltaic module 200, which is beneficial to reducing the installation difficulty of the photovoltaic module 200 and improving the strength of the photovoltaic module 200 at the installation position.

[0056] In some specific embodiments, such as Figures 1 - 2 and Figure 4 As shown, a second splicing portion 31 is provided on the left side of the second photovoltaic unit 120 and a first splicing portion 11 is provided on the right side. On the upper side and the lower side of the second photovoltaic unit 120, the edges of the first substrate 10 and the second substrate 30 are aligned.

[0057] In some embodiments of the present invention, such as Figure 5 As shown, the photovoltaic unit 100 includes a third photovoltaic unit 130. A first splicing portion 11 or a second splicing portion 31 is provided on one side of the third photovoltaic unit 130 along the first direction and on one side along the second direction. And on the other side of the third photovoltaic unit 130 along the first direction and on the other side along the second direction, the edges of the first substrate 10 and the second substrate 30 are aligned. The first direction, the second direction and the stacking direction are perpendicular to each other in pairs.

[0058] It should be noted here that on one side of the third photovoltaic unit 130 along the first direction and on one side along the second direction, a first splicing portion 11 and a second splicing portion 31 can be respectively provided, or two first splicing portions 11 can be respectively provided, or two second splicing portions 31 can be respectively provided. It is only necessary to enable the third photovoltaic unit 130 to be spliced with other photovoltaic units 100 on one side along the first direction and the third photovoltaic unit 130 to be spliced with other photovoltaic units 100 on one side along the second direction.

[0059] Both sides of the third photovoltaic unit 130 along the first direction and on one side along the second direction can be used to splice with other photovoltaic units 100, so that the photovoltaic unit 100 can be spliced along multiple directions, and the splicing range is wider to obtain more specifications of photovoltaic modules 200. The other side of the third photovoltaic unit 130 along the first direction and the other side of the third photovoltaic unit 130 along the second direction can be used to install the photovoltaic module 200, which is beneficial to reducing the installation difficulty of the photovoltaic module 200 and improving the strength of the photovoltaic module 200 at the installation position.

[0060] In some specific embodiments, such as Figure 5 As shown, a second splicing portion 31 is provided on the right side and a second splicing portion 31 is provided on the upper side of the third photovoltaic unit 130 in the lower left corner. On the left side and the lower side of the third photovoltaic unit 130, the edges of the first substrate 10 and the second substrate 30 are aligned.

[0061] In some embodiments of the present utility model, such as Figure 5 shown, the photovoltaic unit 100 includes a fourth photovoltaic unit 140. On both sides of the fourth photovoltaic unit 140 along the first direction, a first splicing portion 11 and a second splicing portion 31 are respectively provided. And on one side of the fourth photovoltaic unit 140 along the second direction, the fourth photovoltaic unit 140 is provided with a first splicing portion 11 or a second splicing portion 31. On the other side of the fourth photovoltaic unit 140 along the second direction, the edges of the first substrate 10 and the second substrate 30 are aligned. The first direction, the second direction, and the stacking direction are perpendicular to each other in pairs.

[0062] Both sides of the fourth photovoltaic unit 140 along the first direction and one side of the fourth photovoltaic unit 140 along the second direction can be used for splicing with other photovoltaic units 100, enabling the photovoltaic unit 100 to be spliced along multiple directions, with a wider splicing range, so as to obtain photovoltaic modules 200 of more specifications. The other side of the third photovoltaic unit 130 along the second direction can be used to realize the installation of the photovoltaic module 200, which is beneficial to reducing the installation difficulty of the photovoltaic module 200 and improving the strength of the photovoltaic module 200 at the installation position.

[0063] In some specific embodiments, such as Figure 5 shown, the second photovoltaic unit 100 from left to right in the bottom row is the fourth photovoltaic unit 140. A second splicing portion 31 is provided on the left side of the fourth photovoltaic unit 140, a second splicing portion 31 is provided on the right side, and a second splicing portion 31 is provided on the upper side. On the lower side of the fourth photovoltaic unit 140, the edges of the first substrate 10 and the second substrate 30 are aligned.

[0064] In some embodiments of the present utility model, such as Figure 5 shown, the photovoltaic unit 100 includes a fifth photovoltaic unit 150. On both sides of the fifth photovoltaic unit 150 along the first direction, a first splicing portion 11 and a second splicing portion 31 are respectively provided. And on both sides of the fifth photovoltaic unit 150 along the second direction, a first splicing portion 11 and a second splicing portion 31 are respectively provided. The first direction, the second direction, and the stacking direction are perpendicular to each other in pairs. Both sides of the fifth photovoltaic unit 150 along the first direction and both sides along the second direction can be used for splicing with other photovoltaic units 100, enabling the photovoltaic unit 100 to be spliced along multiple directions, with a wider splicing range, so as to obtain a larger - sized photovoltaic module 200.

[0065] In some specific embodiments, such as Figure 5 shown, the second photovoltaic unit 100 from left to right in the second row from top to bottom is the fifth photovoltaic unit 150. A second splicing portion 31 is provided on both the left side and the upper side of the fifth photovoltaic unit 150, and a first splicing portion 11 is provided on both the right side and the lower side.

[0066] In some embodiments of the present utility model, such as Figure 4As shown, a plurality of photovoltaic units 100 are spliced along a first direction. In the first direction, the photovoltaic units 100 at both ends are first photovoltaic units 110, and the photovoltaic units 100 in the middle are second photovoltaic units 120. Through the cooperation of the first photovoltaic units 110 and the second photovoltaic units 120, a photovoltaic module 200 with a larger size along the first direction can be obtained, and on both sides of the obtained photovoltaic module 200 along the first direction and both sides along the second direction, the edges of the first substrate 10 and the second substrate 30 are aligned, which is beneficial to reducing the installation difficulty of the photovoltaic module 200 and improving the strength of the photovoltaic module 200 at the installation position.

[0067] In some embodiments, as Figure 5 shown, a plurality of photovoltaic units 100 are spliced along a first direction and a second direction. The photovoltaic units 100 at the four corners are third photovoltaic units 130, the photovoltaic units 100 between adjacent corners are fourth photovoltaic units 140, and the photovoltaic units 100 in the middle are fifth photovoltaic units 150. Through the cooperation of the third photovoltaic units 130, the fourth photovoltaic units 140 and the fifth photovoltaic units 150, a photovoltaic module 200 with a larger size along both the first direction and the second direction can be obtained, and on both sides of the obtained photovoltaic module 200 along the first direction and both sides along the second direction, the edges of the first substrate 10 and the second substrate 30 are aligned, which is beneficial to reducing the installation difficulty of the photovoltaic module 200 and improving the strength of the photovoltaic module 200 at the installation position.

[0068] In some embodiments, a plurality of photovoltaic units 100 are installed on a steel structure bracket, which is beneficial to reducing the number of required steel structure brackets and clamps, reducing the behavior of drilling holes on the building surface, and reducing the possibility of building leakage, and has good practicability.

[0069] In some embodiments of the present utility model, as Figure 3 shown, the photovoltaic module 200 includes a junction box 60. The junction box 60 is connected to the electrical connector 40 at the end in the splicing direction in the photovoltaic module 200, and the electrical connector 40 at the end of the photovoltaic module 200 can be electrically connected to the electrical connector 40 at the end through the junction box 60 at the end of the photovoltaic module 200, and the electrical connectors 40 of two spliced photovoltaic units 100 in the photovoltaic module 200 are located in the accommodation space 50. In some embodiments, the junction box 60 is connected to the main cable or the inverter.

[0070] The junction box 60 can be provided on the side surface of the end of the photovoltaic module 200 along the stacking direction, the side surface of the end perpendicular to the splicing direction, etc. For example, in some embodiments, as Figure 3 shown, a plurality of photovoltaic units 100 are spliced along the left-right direction, and the junction box 60 is provided on the left side surface of the left end of the photovoltaic module 200, so that the electrical connector 40 at the left end is electrically connected to the junction box 60 after leaving the space between the first substrate 10 and the second substrate 30, which is beneficial to further reducing the length of the electrical connector 40 and has better economy.

[0071] In some specific embodiments, the present application reduces the length of the electrical connector 40, reducing the cost of the photovoltaic module 200 by 5%.

[0072] In some embodiments of the present utility model, as Figures 2 - 3 shown, a first sealing layer 71 is provided between the first substrate 10 and the second substrate 30, and the first sealing layer 71 is located between the accommodation space 50 and the photovoltaic cell 20 in the splicing direction. The electrical connector 40 passes through the first sealing layer 71. The first sealing layer 71 can seal and separate the photovoltaic cell 20 and the accommodation space 50, reducing the infiltration of impurities such as water vapor and dust in the external environment into the interior of the photovoltaic unit 100, which is beneficial to protecting the photovoltaic cell 20. And enabling the electrical connector 40 electrically connected to the photovoltaic cell 20 to pass through the first sealing layer 71 is beneficial to fixing the position of the electrical connector 40, reducing the possibility of the electrical connector 40 at the accommodation space 50 detaching from the accommodation space 50, which is beneficial to protecting the electrical connector 40.

[0073] The material of the first sealing layer 71 can be butyl rubber, EVA, POE, PVB, etc. that can block water vapor, with a better effect of protecting the photovoltaic cell 20, and is beneficial to bonding the first substrate 10 and the second substrate 30 together, making the connection between the first substrate 10 and the second substrate 30 tighter.

[0074] In some embodiments of the present utility model, as Figure 2 shown, the accommodation space 50 is filled with a second sealing layer 72. The second sealing layer 72 can seal and separate the external environment and the accommodation space 50, reducing the infiltration of impurities such as water vapor and dust in the external environment into the accommodation space 50, and fixing the position of the electrical connector 40, which is beneficial to protecting the electrical connector 40 in the accommodation space 50. And by filling the accommodation space 50 with the second sealing layer 72, the hollow area of the photovoltaic module 200 is reduced, making the photovoltaic module 200 less likely to break at the accommodation space 50 and having better strength.

[0075] In some embodiments, the second sealing layer 72 is filled after the electrical connectors 40 of the two spliced photovoltaic units 100 are connected, reducing the possibility of gaps appearing in the second sealing layer 72 after splicing and having a better protection effect on the electrical connectors 40.

[0076] The material of the second sealing layer 72 can be silicone rubber, butyl rubber, EVA, POE, PVB, etc., with good sealing performance and being beneficial to bonding the spliced photovoltaic units 100 together, making the connection between the spliced photovoltaic units 100 tighter.

[0077] The first sealing layer 71 and the second sealing layer 72 can be cured by heating, such as curing by heating with a heat gun, or can be cured at room temperature, etc.

[0078] In some embodiments, the first splicing portion 11 is provided with a hollow structure or a concavo-convex structure on the side facing the accommodation space 50, or the first splicing portion 11 is provided with a hollow structure and a concavo-convex structure on the side facing the accommodation space 50, or the second splicing portion 31 is provided with a hollow structure or a concavo-convex structure on the side facing the accommodation space 50, or the second splicing portion 31 is provided with a hollow structure and a concavo-convex structure on the side facing the accommodation space 50. This is beneficial to increase the friction coefficient of the side, so that the second sealing layer 72 is not easy to fall off from the accommodation space 50, and improve the tightness of the connection between the second sealing layer 72 and the side of the accommodation space 50.

[0079] In some embodiments of the present invention, Figures 1 - 2 As shown, the dimension D of the accommodation space 50 in the splicing direction of adjacent photovoltaic units 100 is 5mm-100mm. If D is too small, the splicing of the two photovoltaic units 100 is not firm and they are separated. If D is too large, the two photovoltaic units 100 are easily broken at the splicing. 5mm≤D≤100mm is conducive to taking into account both the splicing firmness of the photovoltaic units 100 and the structural strength of the photovoltaic units 100 at the splicing. For example, D is 5mm, 7mm, 10mm, etc.

[0080] The shape of the accommodation space 50 is not limited, for example Figures 1 - 2 As shown, the accommodation space 50 is formed into a rectangular parallelepiped. The accommodation space 50 may also be in other shapes such as an irregular shape. The shape and size of the accommodation space 50 can be adjusted by processing the first substrate and the second substrate.

[0081] In some embodiments of the present invention, a color film layer is provided between the first substrate 10 and the photovoltaic cell 20. The color film layer is usually made of a film material. The color film layer can be selected from a variety of colors. The color film layer is used to make the photovoltaic unit 100 present color, which facilitates the splicing and assembly of different photovoltaic units 100 to present photovoltaic components 200 with more patterns, thereby meeting user needs.

[0082] like Figures 1 - 5 As shown, the photovoltaic unit 100 according to the embodiment of the second aspect of the utility model includes: a first substrate 10, a second substrate 30, a photovoltaic cell 20 and an electrical connector 40. The first substrate 10, the photovoltaic cell 20 and the second substrate 30 are stacked in sequence, and the photovoltaic unit 100 has a splicing portion 80 on at least one side perpendicular to the stacking direction. The splicing portion 80 is the staggered portion of the first substrate 10 and the second substrate 30, and the electrical connector 40 is electrically connected to the photovoltaic cell 20.

[0083] At least one side of the photovoltaic unit 100 perpendicular to the stacking direction has a splicing portion 80. For example, in some embodiments, the photovoltaic units 100 are stacked in the front-back direction, and the splicing portions 80 are provided on the left side, right side, upper side, and lower side of the photovoltaic unit 100. The splicing portion 80 may be located on the first substrate 10, or the splicing portion 80 may also be located on the second substrate 30. For example, in some embodiments, as Figures 2 - 3 shown, the splicing portion 80 includes a first splicing portion 11 and a second splicing portion 31. The first splicing portion 11 is the area where the first substrate 10 extends beyond the corresponding second substrate 30, and the second splicing portion 31 is the area where the second substrate 30 extends beyond the corresponding first substrate 10.

[0084] The electrical connector 40 is at least partially located on the side of the splicing portion 80 close to the photovoltaic cell 20 along the stacking direction. For example, in some embodiments, as Figures 2 - 3 shown, the side of the splicing portion 80 close to the photovoltaic cell 20 along the stacking direction is a receiving space 50, and the electrical connector 40 is at least partially located in the receiving space 50.

[0085] In some embodiments, the photovoltaic unit 100 further includes a first sealing layer 71. The first sealing layer 71 surrounds the outside of the photovoltaic cell 20. The first sealing layer 71 is provided between the first substrate 10 and the second substrate 30, and the first sealing layer 71 is located between the receiving space 50 and the photovoltaic cell 20 in the splicing direction. The electrical connector 40 passes through the first sealing layer 71, thereby leading the electrical connector 40 from the inside of the battery unit 20 to the outside.

[0086] Different photovoltaic units 100 can be spliced together through the splicing portion 80, and different specifications of products can be obtained by adjusting the splicing direction and the number of spliced photovoltaic units 100. For example, different specifications of photovoltaic modules 200 can be obtained, without having to customize multiple products of different specifications at high prices, which is beneficial to meeting the product specification requirements and reducing costs. In addition, the electrical connector 40 is at least partially located on the side of the splicing portion 80 close to the photovoltaic cell 20 along the stacking direction, which is beneficial to reducing the length of the electrical connector 40 and reducing costs.

[0087] The photovoltaic unit 100 according to the embodiment of the present invention can obtain products of different specifications through the splicing of multiple photovoltaic units 100, with low costs, which is beneficial to saving the electrical connector 40 and further reducing costs, and the adjacent photovoltaic units 100 do not require too long lead-out wire harnesses, and the aesthetics is strong.

[0088] It should be noted that all the features of the photovoltaic unit 100 in the photovoltaic module 200 according to the first aspect embodiment of the present invention can be introduced into the photovoltaic unit 100 according to the second aspect embodiment of the present invention, which will not be elaborated here.

[0089] The other configurations and operations of the photovoltaic module 200 and the photovoltaic unit 100 according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.

[0090] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0091] In the description of this specification, the descriptions referring to terms such as "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0092] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A photovoltaic module, characterized in that: include: A plurality of photovoltaic units, each of which comprises a first substrate, a photovoltaic cell and a second substrate which are sequentially stacked, and each of which further comprises an electrical connector electrically connected to the photovoltaic cell. The plurality of photovoltaic units are spliced ​​with each other, wherein one of the two spliced ​​photovoltaic units has a first splicing portion and the other has a second splicing portion, the first splicing portion is a region where the first substrate exceeds the corresponding second substrate, the second splicing portion is a region where the second substrate exceeds the corresponding first substrate, the first splicing portion and the second splicing portion are stacked in a thickness direction to form a receiving space between the first splicing portion and the second splicing portion, and the electrical connector of the two spliced ​​photovoltaic units is at least partially located in the receiving space and is electrically connected to each other.

2. The photovoltaic module according to claim 1, characterized in that: The photovoltaic unit comprises a first photovoltaic unit, wherein the first splicing portion or the second splicing portion is provided on one side of the first photovoltaic unit along a first direction, and the edges of the first substrate and the second substrate are aligned on the other side of the first photovoltaic unit along the first direction and on both sides along a second direction, and the first direction, the second direction and the stacking direction are perpendicular to each other; and / or, The photovoltaic unit comprises a second photovoltaic unit, the first splicing portion and the second splicing portion are respectively provided on both sides of the second photovoltaic unit along the first direction, and the edges of the first substrate and the second substrate are aligned on both sides of the second photovoltaic unit along the second direction, and the first direction, the second direction and the stacking direction are perpendicular to each other; and / or, The photovoltaic unit comprises a third photovoltaic unit, wherein the first splicing portion or the second splicing portion is provided on one side of the third photovoltaic unit along the first direction and on one side of the third photovoltaic unit along the second direction, and the edges of the first substrate and the second substrate are aligned on the other side of the third photovoltaic unit along the first direction and on the other side of the third photovoltaic unit along the second direction, and the first direction, the second direction and the stacking direction are perpendicular to each other; and / or, The photovoltaic unit comprises a fourth photovoltaic unit, the first splicing portion and the second splicing portion are respectively provided on both sides of the fourth photovoltaic unit along the first direction, and the first splicing portion or the second splicing portion is provided on one side of the fourth photovoltaic unit along the second direction, and the first substrate and the second substrate are aligned at the other side of the fourth photovoltaic unit along the second direction, and the first direction, the second direction and the stacking direction are perpendicular to each other; and / or, The photovoltaic unit includes a fifth photovoltaic unit, and the first splicing portion and the second splicing portion are respectively provided on both sides of the fifth photovoltaic unit along the first direction, and the first splicing portion and the second splicing portion are respectively provided on both sides of the fifth photovoltaic unit along the second direction, and the first direction, the second direction and the stacking direction are perpendicular to each other.

3. The photovoltaic module according to claim 2, characterized in that: A plurality of the photovoltaic units are spliced ​​along the first direction, and in the first direction, the photovoltaic units at both ends are the first photovoltaic units, and the photovoltaic unit in the middle is the second photovoltaic unit; or, A plurality of the photovoltaic units are spliced ​​along the first direction and the second direction, the photovoltaic units located at the four corners are the third photovoltaic units, the photovoltaic units located between adjacent corners are the fourth photovoltaic units, and the photovoltaic units located in the middle are the fifth photovoltaic units.

4. The photovoltaic module according to any one of claims 1 to 3, characterized in that: A junction box is included, and the junction box is connected to an electrical connector located at an end portion in a splicing direction in the photovoltaic assembly.

5. The photovoltaic module according to claim 1, characterized in that: A first sealing layer is provided between the first substrate and the second substrate, and the first sealing layer is located between the accommodating space and the photovoltaic cell in the splicing direction, and the electrical connector passes through the first sealing layer.

6. The photovoltaic module according to claim 1, characterized in that: The accommodating space is filled with a second sealing layer.

7. The photovoltaic module according to claim 6, characterized in that: The side of the first splicing portion and / or the second splicing portion facing the accommodating space is provided with a hollow structure and / or a concave-convex structure.

8. The photovoltaic module according to claim 1, characterized in that: The size of the accommodating space in the splicing direction of adjacent photovoltaic units is 5mm-100mm.

9. The photovoltaic module according to claim 1, characterized in that: A color film layer is provided between the first substrate and the photovoltaic cell.

10. The photovoltaic module according to claim 1, characterized in that: At least one side of the photovoltaic unit perpendicular to the stacking direction has a splicing portion, and the splicing portion is a staggered portion of the first substrate and the second substrate.

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